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Finding the Fourth Proportional to 104,763.72, 144,554.79 and 68,455.56

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Solution

The fourth proportional to 104,763.72, 144,554.79 and 68,455.56 is: 94,456.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,763.72 : 144,554.79 = 68,455.56 : x
  2. Step 2: Convert to fraction form
    104,763.72/144,554.79 = 68,455.56/x
  3. Step 3: Cross multiply
    104,763.72x = 144,554.79 × 68,455.56
  4. Step 4: Simplify right side
    104,763.72x = 9,895,579,100.13
  5. Step 5: Solve for x
    x = 9,895,579,100.13/104,763.72
  6. Step 6: Final answer
    x = 94,456.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.